光流法opencv

一.opencv 中的光流法函数

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1. calcOpticalFlowPyrLK

2. CalculatesanopticalflowforasparsefeaturesetusingtheiterativeLucas-

Kanademethodwithpyramids.

3. 

4. voidcalcOpticalFlowPyrLK(InputArrayprevImg,InputArraynextImg,InputArrayp

revPts,

11. prevImg–First8-bitsingle-channelor3-channelinputimage.

12. nextImg–SecondinputimageofthesamesizeandthesametypeasprevImg.

13. prevPts–Vectorof2Dpointsforwhichtheflowneedstobefound.Thepoint

coordinates

14. mustbesingle-precisionfloating-pointnumbers.

15. nextPts–Outputvectorof2Dpoints(withsingle-precisionfloating-pointcoo

rdinates)

16. containingthecalculatednewpositionsofinputfeaturesinthesecondimage.

When

17. OPTFLOW_USE_INITIAL_FLOWflagispassed,thevectormusthavethesamesizeas

iginaland

22. movedpoints.

23. winSize–Sizeofthesearchwindowateachpyramidlevel.

24. 

25. maxLevel–0-basedmaximalpyramidlevelnumber.Ifsetto0,pyramidsarenot

used

26. (singlelevel).Ifsetto1,twolevelsareused,andsoon.

27. criteria–Parameterspecifyingtheterminationcriteriaoftheiterativesear

chalgorithm

28. (afterthespecifiedmaximumnumberofiterationscriteria.maxCountorwhenth